| 1. The Center of Mass |
| 1.1 Introduction |
| 1.2 Some Physical Assumptions and Conventions |
| 1.3 Physical Motivations in Geometry |
| 1.4 Further Physical Motivations |
| 1.5 An Axiomatic characterization of Center of Mass |
| 1.6 An Algebraic Attack on Geometry |
| 1.7 Painting a Triangle |
| 1.8 Barycentric Coordinates |
| 1.9 Some Algebraic Anticipation |
| 1.10 Affine Geometry |
| 2. Vector Algebra |
| 2.1 Introduction |
| 2.2 The Definition of Vector |
| 2.3 Vector Addition |
| 2.4 Scalar Multiplication |
| 2.5 Physical and Other Applications |
| 2.6 Geometric Applications |
| 2.7 A Vector Approach to the Center of Mass |
| 3. Vector Spaces and Subspaces |
| 3.1 Introduction |
| 3.2 Vector Spaces |
| 3.3 Independence and Dimension |
| 3.4 Some Examples of Vector Spaces: Coordinate Geometry |
| 3.5 Further Examples |
| 3.6 Affine Subspaces |
| 3.7 Some Separation Theorems |
| 3.8 Some Collinearity and Concurrence Theorems |
| 3.9 The Invariance of Dimension |
| 4. Length and Angle |
| 4.1 Introduction |
| 4.2 Geometric Definition of the Inner Product |
| 4.3 Proofs Involving the Inner Product |
| 4.4 The Metrix Axioms |
| 4.5 Some Analytic Geometry |
| 4.6 Orthogonal Subspaces |
| 4.7 Skew Coordinates |
| 5. Miscellaneous Applications |
| 5.1 Introduction |
| 5.2 The Method of Orthogonal Projections |
| 5.3 Linear Equations: Three Views |
| 5.4 A Useful Formula |
| 5.5 Motion |
| 5.6 A Minimum Principle |
| 5.7 Function Spaces |
| 6. Area and Volume |
| 6.1 Introduction |
| 6.2 Area in the Plane: An Axiom System |
| 6.3 Area in the Plane: A Vector Formulation |
| 6.4 Area of Polygons |
| 6.5 Further Examples |
| 6.6 Volumes in 3-Space |
| 6.7 Area Equals Base Times Height |
| 6.8 The Vector Product |
| 6.9 Vector Areas |
| 7. Further Generalizations |
| 7.1 Introduction |
| 7.2 Determinants |
| 7.3 Some Theorems on Determinants |
| 7.4 Even and Odd Permutations |
| 7.5 Outer Products in n-Space |
| 7.6 Some Topology |
| 7.7 Areas of Curved Figures |
| 8. Matrices and Linear Transformations |
| 8.1 Introduction |
| 8.2 Some Examples |
| 8.3 Affine and Linear Transformations |
| 8.4 The Matrix of a Linear Transformation |
| 8.5 The Matrix of an Affine Transformation |
| 8.6 Translations and Dilatations |
| 8.7 The Reduction of an Affine Transformation to a Linea |
| 8.8 A Fixed Point Theorem with Probabilistic Implications |
| 9. Area and Metric Considerations |
| 9.1 Introduction |
| 9.2 Determinants |
| 9.3 Applications to Analytic Geometry |
| 9.4 Orthogonal and Euclidean Transformations |
| 9.5 Classification of Motions of the Plane |
| 9.6 Classification of Motions of 3-Space |
| 10. The Algebra of Matrices |
| 10.1 Introduction |
| 10.2 Multiplication of Matrices |
| 10.3 Inverses |
| 10.4 The Algebra of Matrices |
| 10.5 Eigenvalues and Eigenvectors |
| 10.6 Some Applications |
| 10.7 Projections and Reflections |
| 11. Groups |
| 11.1 Introduction |
| 11.2 Definitions and Examples |
| 11.3 The "Erlangen Program" |
| 11.4 Symmetry |
| 11.5 Physical Applications of Symmetry |
| 11.6 Abstract Groups |
| Index |